Life Cycle of Stars

Stars are formed from big clouds of gas and dust is known as:

• dust cloud

• space fog

• neutron clouds

• nebulae

The main force acting on a nebula is:

• thermal expansion

• singularities

• gravity

• microscopic adhesion

A star is born when:

• nuclear fusion starts

• a nebula becomes a protostar

• gases in a nebula condense

• hydrogen is used up in fusion processes

The two forces battling it out for the stability of a star are gravitational forces and:

• singularity expansion

• chemical bonding forces

• tidal currents

• thermal forces (heat) through convection

A star that has ignited and has used up all of the hydrogen is called:

• Neutron Star

• White Dwarfs

• Red Giants

• Black Holes

When the core of a Red Giant collapses it becomes a:

• White Dwarf

• Supernova

• Red Supergiant

• Black Hole

When a massive star begins to cool and expand it is known as a:

• Black Dwarf

• Red Giant

• Red Supergiant

• White Dwarf

When the core of a Red Supergiant collapses, a bright event occurs, known as:

• white dwarf

• supernova

• big bang

• black hole

After a supernova, the core can collapse into a neutron star, or if massive enough it can become a:

• Black Hole

• White Dwarf

• Red Supergiant

• Black Dwarf

When a Red Giant's outer atmosphere drifts away it is now known as:

• planetary cloud

• White dwarf cloud

• planetary nebula

• expanding nebula